Here is the first set of Citizen Monitoring Reports for 2012 covering the months of April and May. Subsequent reports will follow every 2 weeks or so during the summer, and the reports will be archived here.
- Rather warm and dry conditions persisted into April, but temperatures and rainfall became more normal in May.
- Low Dissolved Oxygen readings (< 4 ppm) were detected at many sites in upper tributaries and residential canals, and severely low readings (< 2 ppm) were detected at a few of these sites.
- Minor accumulations of Nuisance Aquatic Vegetation were reported from many sites, but major accumulations, including floating mats, were reported from several sites in the South Bethany canals (filamentous green algae) in April and May, but only recently from Diamond Pond (mix of submerged vascular plants and filamentous algae).
- Total Enterococcus (TE) levels were elevated in streams in the Broadkill watershed, a few tributaries of the Inland Bays, the Assawoman canal, and at a bayside site in Fenwick Island.
- Prorocentrum minimum, a potentially toxic species, was commonly seen in April, and a very dense bloom was observed in a canal off White Creek. Karlodinium veneficum was particularly widespread in May, but bloom densities remained below levels that have been associated with fish kills in the mid-Atlantic region. Dinophysis acuminata, a species of concern for shellfish toxicity at relatively low cell densities was observed at relatively high cell densities in Torquay canal. Dense blooms of unknown flagellates were detected at the Primehook boat ramp.